Comment 5 for bug 498525

"0" is a valid RLIMIT_CORE value and should not be overloaded to mean "running pipe handler". Instead, the pipe handler should get an RLIMIT_CORE of "1" and leave the rest of the system able to run handlers when processes have already been started with RLIMIT_CORE 0.

Preferably, RLIMIT_CORE values should not be overloaded at all, and the kernel should know which process is the handler, and ignore crashes of that pid.